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Old 02-07-2008, 12:09 AM
"Steve Buzonas"
 
Default pax, core2duo, suspicious activity

On Feb 6, 2008 8:57 AM, brant williams <brant@tnarb.net> wrote:


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256


Hi paxguy =)

I experienced the same issue after upgrading to
hardened-sources-2.6.23-r4 this past weekend. *Previously, I'd been using
hardened-sources-2.6.22-r8 for ~30 days with no discernable problems.


After checking both config files, though, it looks like I may have rushed
through too quickly (sdiff attached).

I've got a screenshot of the log entry that occurred right before the
crash (png attached), and can provide the System.map and kernel image to


you off-list if that would help.

Thank you for your efforts.


brant williams
FCAA CDCA 20BC 3925 D634 *F5C4 7420 6784 4DEB 6002



On Wed, 6 Feb 2008, pageexec@freemail.hu wrote:



> Date: Wed, 06 Feb 2008 13:49:12 +0200
> From: pageexec@freemail.hu
> Reply-To: gentoo-hardened@lists.gentoo.org


> To: gentoo-hardened@lists.gentoo.org
> Subject: Re: [gentoo-hardened] pax, core2duo, suspicious activity
>
> On 6 Feb 2008 at 10:24, * wrote:


>
>> SSH session droped, all daemons stopping too. On the monitor a get
>> "Suspicious activity.... bla-bla PaX... bla-bla...
>
> can you post the precise message? even a screenshot would be fine


> (try to boot with a high resolution frame buffer mode to get as much
> info as you can). also i'll need the System.map file and probably
> vmlinux as well.
>
>> When I recompile kernel without PaX, system works normal withouts


>> kernel-panics.
>
> did you determine which PaX feature triggers the problem?
>
> also, would be nice if you could try out the 2.6.24 test patch.
>
> PS: if you enable HIGHMEM64G/PAGEEXEC then PaX will make use of


> the NX bit.
>
> --
> gentoo-hardened@lists.gentoo.org mailing list
>
>
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What occurs before the crash?* Can you do strace?* Does emerge-webrsync work?

--
Thank you,

Steve Buzonas Jr.
 
Old 02-07-2008, 03:25 AM
Алексей Лесовский
 
Default pax, core2duo, suspicious activity

pageexec@freemail.hu пишет:

On 6 Feb 2008 at 10:24, wrote:
can you post the precise message? even a screenshot would be fine
(try to boot with a high resolution frame buffer mode to get as much
info as you can). also i'll need the System.map file and probably
vmlinux as well.

now system works with non-PaX kernel, I can't restart system often, and
can't


attach screenshot of error-message, or make it on next weekend (9-10Feb)



did you determine which PaX feature triggers the problem?

also, would be nice if you could try out the 2.6.24 test patch.

PS: if you enable HIGHMEM64G/PAGEEXEC then PaX will make use of
the NX bit.
1. PaX or incorect settings in "Processor type and features" of kernel
config is my problem

2. Yes, I know about PAGEEXEC and NX bit, I usually use SEGMEXEC
--
gentoo-hardened@lists.gentoo.org mailing list
 
Old 02-07-2008, 03:33 AM
Алексей Лесовский
 
Default pax, core2duo, suspicious activity

Hello Brant, yes, I see in console analog message, with your screenshot
of emerge.log

and with this words "PaX: suspicious general protection fault"

thanks for configdiffs


brant williams пишет:

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256


Hi paxguy =)

I experienced the same issue after upgrading to
hardened-sources-2.6.23-r4 this past weekend. Previously, I'd been
using hardened-sources-2.6.22-r8 for ~30 days with no discernable
problems. After checking both config files, though, it looks like I
may have rushed through too quickly (sdiff attached).


I've got a screenshot of the log entry that occurred right before the
crash (png attached), and can provide the System.map and kernel image
to you off-list if that would help.


Thank you for your efforts.


brant williams
FCAA CDCA 20BC 3925 D634 F5C4 7420 6784 4DEB 6002



On Wed, 6 Feb 2008, pageexec@freemail.hu wrote:


Date: Wed, 06 Feb 2008 13:49:12 +0200
From: pageexec@freemail.hu
Reply-To: gentoo-hardened@lists.gentoo.org
To: gentoo-hardened@lists.gentoo.org
Subject: Re: [gentoo-hardened] pax, core2duo, suspicious activity

On 6 Feb 2008 at 10:24, wrote:


SSH session droped, all daemons stopping too. On the monitor a get
"Suspicious activity.... bla-bla PaX... bla-bla...


can you post the precise message? even a screenshot would be fine
(try to boot with a high resolution frame buffer mode to get as much
info as you can). also i'll need the System.map file and probably
vmlinux as well.


When I recompile kernel without PaX, system works normal withouts
kernel-panics.


did you determine which PaX feature triggers the problem?

also, would be nice if you could try out the 2.6.24 test patch.

PS: if you enable HIGHMEM64G/PAGEEXEC then PaX will make use of
the NX bit.

--
gentoo-hardened@lists.gentoo.org mailing list



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------------------------------------------------------------------------



--
gentoo-hardened@lists.gentoo.org mailing list
 
Old 02-07-2008, 03:39 AM
Алексей Лесовский
 
Default pax, core2duo, suspicious activity

system crashes unexpectedly, and can go down at any time.
strace can't do, i don't know what is this.
and webrsync fail too

Steve Buzonas пишет:



On Feb 6, 2008 8:57 AM, brant williams <brant@tnarb.net
<mailto:brant@tnarb.net>> wrote:


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256


Hi paxguy =)

I experienced the same issue after upgrading to
hardened-sources-2.6.23-r4 this past weekend. Previously, I'd
been using
hardened-sources-2.6.22-r8 for ~30 days with no discernable problems.
After checking both config files, though, it looks like I may have
rushed
through too quickly (sdiff attached).

I've got a screenshot of the log entry that occurred right before the
crash (png attached), and can provide the System.map and kernel
image to
you off-list if that would help.

Thank you for your efforts.


brant williams
FCAA CDCA 20BC 3925 D634 F5C4 7420 6784 4DEB 6002



On Wed, 6 Feb 2008, pageexec@freemail.hu
<mailtoageexec@freemail.hu> wrote:

> Date: Wed, 06 Feb 2008 13:49:12 +0200
> From: pageexec@freemail.hu <mailtoageexec@freemail.hu>
> Reply-To: gentoo-hardened@lists.gentoo.org
<mailto:gentoo-hardened@lists.gentoo.org>
> To: gentoo-hardened@lists.gentoo.org
<mailto:gentoo-hardened@lists.gentoo.org>
> Subject: Re: [gentoo-hardened] pax, core2duo, suspicious activity
>
> On 6 Feb 2008 at 10:24, wrote:
>
>> SSH session droped, all daemons stopping too. On the monitor a get
>> "Suspicious activity.... bla-bla PaX... bla-bla...
>
> can you post the precise message? even a screenshot would be fine
> (try to boot with a high resolution frame buffer mode to get as much
> info as you can). also i'll need the System.map file and probably
> vmlinux as well.
>
>> When I recompile kernel without PaX, system works normal withouts
>> kernel-panics.
>
> did you determine which PaX feature triggers the problem?
>
> also, would be nice if you could try out the 2.6.24 test patch.
>
> PS: if you enable HIGHMEM64G/PAGEEXEC then PaX will make use of
> the NX bit.
>
> --
> gentoo-hardened@lists.gentoo.org
<mailto:gentoo-hardened@lists.gentoo.org> mailing list
>
>
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What occurs before the crash? Can you do strace? Does
emerge-webrsync work?


--
Thank you,

Steve Buzonas Jr.


--
gentoo-hardened@lists.gentoo.org mailing list
 
Old 02-07-2008, 04:03 AM
Алексей Лесовский
 
Default pax, core2duo, suspicious activity

Send System.map

pageexec@freemail.hu пишет:

On 6 Feb 2008 at 7:57, brant williams wrote:

I've got a screenshot of the log entry that occurred right before the
crash (png attached), and can provide the System.map and kernel image to
you off-list if that would help.



yes, i'll need them because your oops doesn't have symbol info. it would
also be nice if you could reproduce it with 2.6.24/PaX alone.




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00
 
Old 02-07-2008, 11:57 AM
 
Default pax, core2duo, suspicious activity

On 7 Feb 2008 at 10:03, wrote:

> Send System.map

thanks but it'd be useful only if i had the corresponding oops as
well (and if you recompile then obviously i'll need the System.map
that corresponds to the then running/oopsing kernel).

--
gentoo-hardened@lists.gentoo.org mailing list
 
Old 02-07-2008, 12:01 PM
 
Default pax, core2duo, suspicious activity

On 7 Feb 2008 at 9:25, wrote:

> now system works with non-PaX kernel, I can't restart system often, and
> can't attach screenshot of error-message, or make it on next weekend (9-10Feb)

it's fine, whenever you have time. make sure you enable CONFIG_KALLSYMS
(iirc, you have to disable HIDESYM in grsec for that).

> > PS: if you enable HIGHMEM64G/PAGEEXEC then PaX will make use of
> > the NX bit.
> 1. PaX or incorect settings in "Processor type and features" of kernel
> config is my problem

what makes you think it's a processor type setting problem? i'd rather
guess it's some PaX bug/feature at this point in time ;-).

--
gentoo-hardened@lists.gentoo.org mailing list
 
Old 02-07-2008, 12:58 PM
brant williams
 
Default pax, core2duo, suspicious activity

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256


Well, I was watching logs with xtail when the crash occurred. I have a
cron job that calls eix-sync each day at 11:00. The log entries were sent
to xtail, but didn't get synchronised to disk, so there's a gap. The box
went dark right after that.


I rebooted it and set lilo to boot the previous kernel. It died again
during shutdown <no console to output info to though, as the box is
headless>.


What would you suggest running strace on? Maybe init with the '-f' flag
(to follow child processes)? I'll have some time to take a closer look
this weekend and will try to get additional information.


I'll also test with 2.6.24 and recheck my configs.

As for web-rsync, I've never used it nor had the need... eix-sync has been
working fine for several months now.



brant williams
FCAA CDCA 20BC 3925 D634 F5C4 7420 6784 4DEB 6002



On Wed, 6 Feb 2008, Steve Buzonas wrote:


Date: Wed, 6 Feb 2008 20:09:20 -0500
From: Steve Buzonas <steve.buzonas@gmail.com>
Reply-To: gentoo-hardened@lists.gentoo.org
To: gentoo-hardened@lists.gentoo.org
Subject: Re: [gentoo-hardened] pax, core2duo, suspicious activity

On Feb 6, 2008 8:57 AM, brant williams <brant@tnarb.net> wrote:


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256


Hi paxguy =)

I experienced the same issue after upgrading to
hardened-sources-2.6.23-r4 this past weekend. Previously, I'd been using
hardened-sources-2.6.22-r8 for ~30 days with no discernable problems.
After checking both config files, though, it looks like I may have rushed
through too quickly (sdiff attached).

I've got a screenshot of the log entry that occurred right before the
crash (png attached), and can provide the System.map and kernel image to
you off-list if that would help.

Thank you for your efforts.


brant williams
FCAA CDCA 20BC 3925 D634 F5C4 7420 6784 4DEB 6002



On Wed, 6 Feb 2008, pageexec@freemail.hu wrote:


Date: Wed, 06 Feb 2008 13:49:12 +0200
From: pageexec@freemail.hu
Reply-To: gentoo-hardened@lists.gentoo.org
To: gentoo-hardened@lists.gentoo.org
Subject: Re: [gentoo-hardened] pax, core2duo, suspicious activity

On 6 Feb 2008 at 10:24, wrote:


SSH session droped, all daemons stopping too. On the monitor a get
"Suspicious activity.... bla-bla PaX... bla-bla...


can you post the precise message? even a screenshot would be fine
(try to boot with a high resolution frame buffer mode to get as much
info as you can). also i'll need the System.map file and probably
vmlinux as well.


When I recompile kernel without PaX, system works normal withouts
kernel-panics.


did you determine which PaX feature triggers the problem?

also, would be nice if you could try out the 2.6.24 test patch.

PS: if you enable HIGHMEM64G/PAGEEXEC then PaX will make use of
the NX bit.

--
gentoo-hardened@lists.gentoo.org mailing list



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What occurs before the crash? Can you do strace? Does emerge-webrsync
work?

--
Thank you,

Steve Buzonas Jr.


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--
gentoo-hardened@lists.gentoo.org mailing list
 
Old 02-08-2008, 03:10 AM
Алексей Лесовский
 
Default pax, core2duo, suspicious activity

1. ok today i make kernel with your recomends, and run him for 2 days
2. I have this problem in two-cores processor (In one-core all works
always normally).

I think processor type settings maybe as a problem, but I'm not sure:-)


pageexec@freemail.hu пишет:

On 7 Feb 2008 at 9:25, wrote:


it's fine, whenever you have time. make sure you enable CONFIG_KALLSYMS

(iirc, you have to disable HIDESYM in grsec for that).


what makes you think it's a processor type setting problem? i'd rather

guess it's some PaX bug/feature at this point in time ;-).




--
gentoo-hardened@lists.gentoo.org mailing list
 
Old 02-08-2008, 04:47 AM
Алексей Лесовский
 
Default pax, core2duo, suspicious activity

I make kernel with CONFIG_KALLSYMS (and some settings will enabled by
defaults), and run him, but I have another problem

when I strating emerge (--sync or -pv or -f or simple emerge packet) I got

sem_post: Invalid argument
sem_post: Invalid argument
...^C
Traceback (most recent call last):
File "/usr/bin/emerge", line 6, in ?
import sys
KeyboardInterrupt

Other commands, ls, mount, mv, cp, cd, nano, for example work correctly
and apache did work slowly (pages in browser loads with some delays)

pageexec@freemail.hu пишет:

On 7 Feb 2008 at 9:25, wrote:


now system works with non-PaX kernel, I can't restart system often, and
can't attach screenshot of error-message, or make it on next weekend (9-10Feb)



it's fine, whenever you have time. make sure you enable CONFIG_KALLSYMS
(iirc, you have to disable HIDESYM in grsec for that).



PS: if you enable HIGHMEM64G/PAGEEXEC then PaX will make use of
the NX bit.

1. PaX or incorect settings in "Processor type and features" of kernel
config is my problem



what makes you think it's a processor type setting problem? i'd rather
guess it's some PaX bug/feature at this point in time ;-).




--
gentoo-hardened@lists.gentoo.org mailing list
 

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